| Acronym | Definition |
|---|
| HEAT | Hostile Environment Awareness Training |
| HEAT | High-Explosive Anti-Tank (munition) |
| HEAT | Heat Escape Lessening Posture |
| HEAT | Highway Enforcement of Aggressive Traffic (various locations) |
| HEAT | Higher Education and Training (IBM) |
| HEAT | Higher Education Assistive Technology (various locations) |
| HEAT | High-Energy Antimatter Telescope |
| HEAT | Help End Auto Theft |
| HEAT | Humanitarian Environmental Analysis Team (Godzilla) |
| HEAT | Home Energy Assistance Team |
| HEAT | Higher Education Area Transit (Greensboro, North Carolina) |
| HEAT | Higher Education and Applied Technology Center (Harford County, MD) |
| HEAT | Helpdesk Expert Automation Tool |
| HEAT | High Energy Access Tools |
| HEAT | Hemisphere Emergency Action Team |
| HEAT | HMMWV(High Mobility Multipurpose Wheeled Vehicle) Egress Assistance Trainer (US DoD) |
| HEAT | Higher Education and Advanced Technology Center (Lowry, CO, USA) |
| HEAT | Headquarters Effectiveness Assessment Tool |
| HEAT | hydroxyphenyl-ethyl-aminomethyl-tetralone |
| HEAT | Hal's Emerald Attack Team |
| HEAT | Hackers Enterprising Across Telecommunications |
| HEAT | High-rise Emergency Aerial Team |
| HEAT | Hoffman Estates Airsoft Team (Chicago, IL) |
| HEAT | High-Enthalpy Arc-heated Tunnel |
| HEAT | Hotel Employees Action Team |
| HEAT | Human Erythrocyte Aglutination Test |